GRAMMATICAL ERRORS IN WRITING NARRATIVE MADE BY THE GRADE XI NATURAL SCIENCE AND SOCIAL SCIENCE STUDENTS AT SMA NEGERI 1 AEKKUO, LABUHANBATU UTARA.

The aim of this study is to discover of grammatical errors in writing narrative text that have been made by the natural science and social science students. Causal-comparative design is used as the research method. This research took place at SMA N 1 Aek Kuo, Labuhanbatu Utara. There were 2 classes chosen as the sample with 15 students in each class. The classes were divided into two classes namely natural science class and social science class. The instrument of the research is the free narrative writing made by the students. The result has shown the total errors in natural science students are 155 while in social science students are 125 in the other words the average score of natural science class is 73,8 while in social science class is 78,6. This study has shown that the natural science students are not always good than social science students